Home / 57,946.10-86,919.15-21,005.30

Finding the Fourth Proportional to 57,946.10, 86,919.15 and 21,005.30

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Solution

The fourth proportional to 57,946.10, 86,919.15 and 21,005.30 is: 31,507.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,946.10 : 86,919.15 = 21,005.30 : x
  2. Step 2: Convert to fraction form
    57,946.10/86,919.15 = 21,005.30/x
  3. Step 3: Cross multiply
    57,946.10x = 86,919.15 × 21,005.30
  4. Step 4: Simplify right side
    57,946.10x = 1,825,762,821.50
  5. Step 5: Solve for x
    x = 1,825,762,821.50/57,946.10
  6. Step 6: Final answer
    x = 31,507.95

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.